19257

Appears in sequences

• Sums of 3 distinct powers of 7.at n=18A038482
• Indices of primes in sequence defined by A(0) = 11, A(n) = 10*A(n-1) + 71 for n > 0.at n=10A056249
• a(n) = (n-1)*(n-2)^3 - A003878(n-3), with a(1) = a(2) = 0 and a(3) = 2.at n=31A075681
• a(1)=1, a(2)=2; for n >= 2, a(n+1) = a(n) + sum of prime factors of a(n).at n=40A096461
• Number of strings of numbers x(i=1..n) in 0..7 with sum i*x(i)^2 equal to n*49.at n=7A184439
• Number of strings of numbers x(i=1..8) in 0..n with sum i*x(i)^2 equal to n*64.at n=6A184447
• a(n+1) is the sum of a(n) and the prime factors of a(n), counted with multiplicity. Start with a(0) = 3.at n=24A192896
• Number of multisets of nonempty words with a total of n letters over n-ary alphabet such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.at n=10A293110
• Number of multisets of nonempty words with a total of n letters over denary alphabet such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.at n=10A293740
• Number of partitions of an n-set without blocks of size 5.at n=9A343665